DBPapers
DOI: 10.5593/sgem2017H/15/S06.076

THE TETHYAN ORGANIC-RICH ROCKS AS TARGET FOR UNCONVENTIONAL HYDROCARBON IN THE POLISH OUTER CARPATHIANS

J. Golonka, A. Waskowska, K. Starzec, G. Machowski, M. Krobicki
Thursday 23 November 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgemviennagreen.org, SGEM2017 Vienna GREEN Conference Proceedings, ISBN 978-619-7408-26-3 / ISSN 1314-2704, 27 - 29 November, 2017, Vol. 17, Issue 15, 599-606 pp; DOI: 10.5593/sgem2017H/15/S06.076

ABSTRACT

The Outer Carpathians contain organic-rich rocks, deposited in the basins belonging to the Tethys realm during Jurassic-Late Cretaceous and to the Paratethys realm during Oligocene times. The Alpine Tethys developed during the Early-Middle Jurassic times. The Aalenian-Lower Bajocian dark shales of the Skrzypny Formation and Upper Cretaceous-Paleocene Ropianka Formation were deposited in this realm. The Protosilesian Basin, which constitutes the northern part of the Western Tethys, developed as back-arc basin north of the Alpine Tethys during Late Jurassic times. The Lower Cretaceous anoxic black clayey shales and mudstones of Spas and Veřovice formations were deposited in this basin. The value of Total Organic Carbon (TOC) is up to 11.86% on the Spas Formation. The Oligocene Menilite Formation was deposited in the Krosno Basin, which belonged to the Paratethys. This basin originated in front of the advanced accretionary prism. TOC content of Menilite Formation ranges of from 0.18 to 17.25%. The high organic productivity was caused by restricted conditions as well as by symmetric and circular upwelling. The Carpathian organic-rich rocks can represent unconventional resources known as shale-gas and shale-oil.

Keywords: Carpathians, shale-gas, shale-oil, Tethys, Paratethys